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US 6,969,494 B2Granted
Plasma based trace metal removal apparatus and method
AssigneeContinental Research & Engineering, LLC
InventorChristopher A. Herbst
Life of this patent
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Abstract
A system and method for the removal of metals such as mercury from a gas stream. The method involves contacting a gas stream containing the target metals with reactive chemical species generated in a plasma device. The metal to be removed is chemically converted into forms enabling capture in either conventional particulate removal devices or in a wet scrubber for the capture of a soluble chemical species.
Claims8
A plasma based removal apparatus for the removal of contaminants from a gas stream comprising:
- a plurality of non-thermal plasma generation devices radially arranged in a conduit;
- a source of electrical power supplying electrical power to said plasma devices;
- a source of plasma gas in fluid communication with said plasma devices to create an activated species within said plasma devices and discharge the activated species into a gas stream containing at least one contaminant;
- whereby the activated species reacts with the at least one contaminant to form at least one reactant compound;
- and
- a removal device for removing the at least one reactant compound from the gas stream.
3 more elements
Dependencies are inferred from the claim text.